Решение:
$$125678 + 68409 = 194087$$
$$398027 + 4793 = 402820$$
$$401600 - 129871 = 271729$$
$$236004 - 5996 = 230008$$
$$4983 \cdot 670 = 3338610$$
$$578 \cdot 345 = 199410$$
$$4097 \cdot 602 = 2466394$$
$$2340 : 9 = 260$$
$$27090 : 45 = 602$$
$$24486 : 106 = 231$$
Ответ:
$$125678 + 68409 = \textbf{194087}$$
$$398027 + 4793 = \textbf{402820}$$
$$401600 - 129871 = \textbf{271729}$$
$$236004 - 5996 = \textbf{230008}$$
$$4983 \cdot 670 = \textbf{3338610}$$
$$578 \cdot 345 = \textbf{199410}$$
$$4097 \cdot 602 = \textbf{2466394}$$
$$2340 : 9 = \textbf{260}$$
$$27090 : 45 = \textbf{602}$$
$$24486 : 106 = \textbf{231}$$